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commit 555fae60b2bbb2d6282d82c5321d3adfa85b22ae upstream.
The cp0_tcstatus member of struct pt_regs was removed along with the
rest of SMTC in v3.16, commit b633648c5ad3 ("MIPS: MT: Remove SMTC
support"), however recent uprobes support in v4.3 added back a reference
to it in the regoffset_table[] in ptrace.c. Remove it.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes: 40e084a506eb ("MIPS: Add uprobes support.")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11920/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2549cc967ebb4043f3507b55e3dc579f44d3b516 upstream.
Change the CONFIG_MIPS_CMDLINE_EXTEND to CONFIG_MIPS_CMDLINE_DTB_EXTEND
to resolve the EXTEND_WITH_PROM macro.
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Fixes: 2024972ef533 ("MIPS: Make the kernel arguments from dtb available")
Reviewed-by: Alexander Sverdlin <alexander.svedlin@gmail.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11909/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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https://source.codeaurora.org/quic/la/kernel/msm-4.4 into lineage-17.1-caf-msm8998
* tag 'LA.UM.8.4.r1-05500-8x98.0' of https://source.codeaurora.org/quic/la/kernel/msm-4.4:
ARM: convert to generated system call tables
ARM: remove indirection of asm/mach-types.h
mm/zsmalloc.c: change stat type parameter to int
msm: sde: fix mem access of sde rotator regdma ram
soc: qcom: Fix strlcpy compilation error with clang
sysmon-qmi: Fix compilation error while using LLVM
mm/zsmalloc.c: fix -Wunneeded-internal-declaration warning
sched/sysctl: Fix attributes of some extern declarations
ion: Fix typecasting of msm_ion_heap_types
soc: qcom: glink_debugfs: Fix compilation error with clang
msm: ipa3: Fix compilation errors after enabling LLVM
msm: ipa: Fix assignment warning with clang
mmc: host: sdhci-msm-ice: Fix clang warning with NOT operator usage
driver : Fix warnings and errors with llvm
soc: qcom: access smp2p_smem structure with I/O function
Makefile: Disable undefined-optimized and tautological features
ANDROID_BUILD_TOP is deprecated.
AndroidKernel: Update the LLVM path
AndroidKernel: Add configuration for the LLVM path
AndroidKernel: Add LLVM support for Kernel
drivers: hwmon: Fix compilation errors in ADC for kernel 4.9
msm: camera: Fix warnings and errors with llvm
f_qc_rndis: Remove unused structure
crypto: qcedev: Fix out of memory issue
crypto: msm: update QTI crypto drivers for msm-4.4
fbdev: msm: wait for frame complete before triggering dma cmd
msm: mdss: hdmi: don't reset CEC while triggering message send
fbdev: msm: Fix race condition during te_irq calls
msm: camera: Fix OOB issue in IR CUT driver
Change-Id: Ib371d4baa8840eabda4bd825d3abcd86e79d5c7a
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Convert ARM to use a similar mechanism to x86 to generate the unistd.h
system call numbers and the various kernel system call tables. This
means that rather than having to edit three places (asm/unistd.h for
the total number of system calls, uapi/asm/unistd.h for the system call
numbers, and arch/arm/kernel/calls.S for the call table) we have only
one place to edit, making the process much more simple.
The scripts have knowledge of the table padding requirements, so there's
no need to worry about __NR_syscalls not fitting within the immediate
constant field of ALU instructions anymore.
Change-Id: Ie70e712b4779601beaeb4f660b8fa910a159ce87
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Git-Commit: 96a8fae0fe094b6a26a3ec88b2f097418f269cfe
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[schikk@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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Arrange for mach-types.h to be directly generated in the relevant
path, so we don't need a one-liner file in arch/arm/include/asm/.
Change-Id: I4693b7279625fdcbf5d99902af40968414fc998a
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Git-Commit: 4e2648db9c5f7b2281551694597102612f54460d
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[schikk@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05400-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
96b09cba55905 UPSTREAM: net: socket: set sock->sk to NULL after calling proto_ops::release()
Conflicts:
drivers/scsi/ufs/ufshcd.c
drivers/usb/gadget/composite.c
drivers/usb/gadget/function/f_fs.c
Change-Id: I3e79c0d20e3eb3246a50c9a1e815cdf030a4232e
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Changes in 4.4.222
ext4: fix special inode number checks in __ext4_iget()
drm/qxl: qxl_release leak in qxl_hw_surface_alloc()
ALSA: pcm: oss: Place the plugin buffer overflow checks correctly
PM: ACPI: Output correct message on target power state
RDMA/mlx4: Initialize ib_spec on the stack
vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn()
ALSA: opti9xx: shut up gcc-10 range warning
nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl
dmaengine: dmatest: Fix iteration non-stop logic
i2c: designware-pci: use IRQF_COND_SUSPEND flag
perf hists: Fix HISTC_MEM_DCACHELINE width setting
powerpc/perf: Remove PPMU_HAS_SSLOT flag for Power8
perf/x86: Fix uninitialized value usage
exynos4-is: fix a format string bug
ASoC: wm8960: Fix WM8960_SYSCLK_PLL mode
ASoC: imx-spdif: Fix crash on suspend
ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
selinux: properly handle multiple messages in selinux_netlink_send()
Linux 4.4.222
Change-Id: I510144039d424ae2e57ae23c188f2ed4d020ed11
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit e01d8718de4170373cd7fbf5cf6f9cb61cebb1e9 upstream.
When calling intel_alt_er() with .idx != EXTRA_REG_RSP_* we will not
initialize alt_idx and then use this uninitialized value to index an
array.
When that is not fatal, it can result in an infinite loop in its
caller __intel_shared_reg_get_constraints(), with IRQs disabled.
Alternative error modes are random memory corruption due to the
cpuc->shared_regs->regs[] array overrun, which manifest in either
get_constraints or put_constraints doing weird stuff.
Only took 6 hours of painful debugging to find this. Neither GCC nor
Smatch warnings flagged this bug.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: ae3f011fc251 ("perf/x86/intel: Fix SLM MSR_OFFCORE_RSP1 valid_mask")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 370f06c88528b3988fe24a372c10e1303bb94cf6 upstream.
Commit 7a7868326d77 ("powerpc/perf: Add an explict flag indicating
presence of SLOT field") introduced the PPMU_HAS_SSLOT flag to remove
the assumption that MMCRA[SLOT] was present when PPMU_ALT_SIPR was not
set.
That commit's changelog also mentions that Power8 does not support
MMCRA[SLOT]. However when the Power8 PMU support was merged, it
errnoeously included the PPMU_HAS_SSLOT flag.
So remove PPMU_HAS_SSLOT from the Power8 flags.
mpe: On systems where MMCRA[SLOT] exists, the field occupies bits 37:39
(IBM numbering). On Power8 bit 37 is reserved, and 38:39 overlap with
the high bits of the Threshold Event Counter Mantissa. I am not aware of
any published events which use the threshold counting mechanism, which
would cause the mantissa bits to be set. So in practice this bug is
unlikely to trigger.
Fixes: e05b9b9e5c10 ("powerpc/perf: Power8 PMU support")
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use the suggestions mentioned in the APEX documentation
https://source.android.com/devices/tech/ota/apex
Also, enable DM_VERITY_AVB on x86, which was incorrectly disabled.
Change-Id: Id9e1b0bf525802dd67a9bf4b7c6c6408e87948fd
Signed-off-by: Alistair Delva <adelva@google.com>
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Changes in 4.4.221
ext4: fix extent_status fragmentation for plain files
ALSA: hda - Fix incorrect usage of IS_REACHABLE()
net: ipv4: emulate READ_ONCE() on ->hdrincl bit-field in raw_sendmsg()
net: ipv4: avoid unused variable warning for sysctl
crypto: mxs-dcp - make symbols 'sha1_null_hash' and 'sha256_null_hash' static
vti4: removed duplicate log message.
scsi: lpfc: Fix kasan slab-out-of-bounds error in lpfc_unreg_login
ceph: return ceph_mdsc_do_request() errors from __get_parent()
ceph: don't skip updating wanted caps when cap is stale
pwm: rcar: Fix late Runtime PM enablement
scsi: iscsi: Report unbind session event when the target has been removed
ASoC: Intel: atom: Take the drv->lock mutex before calling sst_send_slot_map()
kernel/gcov/fs.c: gcov_seq_next() should increase position index
ipc/util.c: sysvipc_find_ipc() should increase position index
s390/cio: avoid duplicated 'ADD' uevents
pwm: renesas-tpu: Fix late Runtime PM enablement
pwm: bcm2835: Dynamically allocate base
ipv6: fix restrict IPV6_ADDRFORM operation
macvlan: fix null dereference in macvlan_device_event()
net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node
net/x25: Fix x25_neigh refcnt leak when receiving frame
tcp: cache line align MAX_TCP_HEADER
team: fix hang in team_mode_get()
xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
ALSA: hda: Remove ASUS ROG Zenith from the blacklist
iio: xilinx-xadc: Fix ADC-B powerdown
iio: xilinx-xadc: Fix clearing interrupt when enabling trigger
iio: xilinx-xadc: Fix sequencer configuration for aux channels in simultaneous mode
fs/namespace.c: fix mountpoint reference counter race
USB: sisusbvga: Change port variable from signed to unsigned
USB: Add USB_QUIRK_DELAY_CTRL_MSG and USB_QUIRK_DELAY_INIT for Corsair K70 RGB RAPIDFIRE
drivers: usb: core: Don't disable irqs in usb_sg_wait() during URB submit.
drivers: usb: core: Minimize irq disabling in usb_sg_cancel()
USB: core: Fix free-while-in-use bug in the USB S-Glibrary
USB: hub: Fix handling of connect changes during sleep
ALSA: usx2y: Fix potential NULL dereference
ALSA: usb-audio: Fix usb audio refcnt leak when getting spdif
ALSA: usb-audio: Filter out unsupported sample rates on Focusrite devices
KVM: Check validity of resolved slot when searching memslots
KVM: VMX: Enable machine check support for 32bit targets
tty: hvc: fix buffer overflow during hvc_alloc().
tty: rocket, avoid OOB access
usb-storage: Add unusual_devs entry for JMicron JMS566
audit: check the length of userspace generated audit records
ASoC: dapm: fixup dapm kcontrol widget
ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y
staging: comedi: dt2815: fix writing hi byte of analog output
staging: comedi: Fix comedi_device refcnt leak in comedi_open
staging: vt6656: Fix drivers TBTT timing counter.
staging: vt6656: Power save stop wake_up_count wrap around.
UAS: no use logging any details in case of ENODEV
UAS: fix deadlock in error handling and PM flushing work
usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
remoteproc: Fix wrong rvring index computation
sctp: use right member as the param of list_for_each_entry
fuse: fix possibly missed wake-up after abort
mtd: cfi: fix deadloop in cfi_cmdset_0002.c do_write_buffer
usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete
net/cxgb4: Check the return from t4_query_params properly
perf/core: fix parent pid/tid in task exit events
bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B
scsi: target: fix PR IN / READ FULL STATUS for FC
xen/xenbus: ensure xenbus_map_ring_valloc() returns proper grant status
ext4: convert BUG_ON's to WARN_ON's in mballoc.c
ext4: avoid declaring fs inconsistent due to invalid file handles
ext4: protect journal inode's blocks using block_validity
ext4: don't perform block validity checks on the journal inode
ext4: fix block validity checks for journal inodes using indirect blocks
ext4: unsigned int compared against zero
propagate_one(): mnt_set_mountpoint() needs mount_lock
Linux 4.4.221
Change-Id: I95cadd4206a7c89541de002faacea3a28e7b1ac3
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit aee194b14dd2b2bde6252b3acf57d36dccfc743a ]
This patch fixes an encoding bug in emit_stx for BPF_B when the source
register is BPF_REG_FP.
The current implementation for BPF_STX BPF_B in emit_stx saves one REX
byte when the operands can be encoded using Mod-R/M alone. The lower 8
bits of registers %rax, %rbx, %rcx, and %rdx can be accessed without using
a REX prefix via %al, %bl, %cl, and %dl, respectively. Other registers,
(e.g., %rsi, %rdi, %rbp, %rsp) require a REX prefix to use their 8-bit
equivalents (%sil, %dil, %bpl, %spl).
The current code checks if the source for BPF_STX BPF_B is BPF_REG_1
or BPF_REG_2 (which map to %rdi and %rsi), in which case it emits the
required REX prefix. However, it misses the case when the source is
BPF_REG_FP (mapped to %rbp).
The result is that BPF_STX BPF_B with BPF_REG_FP as the source operand
will read from register %ch instead of the correct %bpl. This patch fixes
the problem by fixing and refactoring the check on which registers need
the extra REX byte. Since no BPF registers map to %rsp, there is no need
to handle %spl.
Fixes: 622582786c9e0 ("net: filter: x86: internal BPF JIT")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200418232655.23870-1-luke.r.nels@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit f1baca8896ae18e12c45552a4c4ae2086aa7e02c upstream.
512a928affd5 ("ARM: imx: build v7_cpu_resume() unconditionally")
introduced an unintended linker error for i.MX6 configurations that have
ARM_CPU_SUSPEND=n which can happen if neither CONFIG_PM, CONFIG_CPU_IDLE,
nor ARM_PSCI_FW are selected.
Fix this by having v7_cpu_resume() compiled only when cpu_resume() it
calls is available as well.
The C declaration for the function remains unguarded to avoid future code
inadvertently using a stub and introducing a regression to the bug the
original commit fixed.
Cc: <stable@vger.kernel.org>
Fixes: 512a928affd5 ("ARM: imx: build v7_cpu_resume() unconditionally")
Reported-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Tested-by: Roland Hieber <rhi@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fb56baae5ea509e63c2a068d66a4d8ea91969fca upstream.
There is no reason to limit the use of do_machine_check
to 64bit targets. MCE handling works for both target familes.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Fixes: a0861c02a981 ("KVM: Add VT-x machine check support")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Message-Id: <20200414071414.45636-1-ubizjak@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.220
bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
net: vxge: fix wrong __VA_ARGS__ usage
qlcnic: Fix bad kzalloc null test
i2c: st: fix missing struct parameter description
irqchip/versatile-fpga: Handle chained IRQs properly
selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
gfs2: Don't demote a glock until its revokes are written
x86/boot: Use unsigned comparison for addresses
locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
btrfs: remove a BUG_ON() from merge_reloc_roots()
btrfs: track reloc roots based on their commit root bytenr
misc: rtsx: set correct pcr_ops for rts522A
ASoC: fix regwmask
ASoC: dapm: connect virtual mux with default value
ASoC: dpcm: allow start or stop during pause for backend
ASoC: topology: use name_prefix for new kcontrol
usb: gadget: f_fs: Fix use after free issue as part of queue failure
usb: gadget: composite: Inform controller driver of self-powered
ALSA: usb-audio: Add mixer workaround for TRX40 and co
ALSA: hda: Add driver blacklist
ALSA: hda: Fix potential access overflow in beep helper
ALSA: ice1724: Fix invalid access for enumerated ctl items
ALSA: pcm: oss: Fix regression by buffer overflow fix
acpi/x86: ignore unspecified bit positions in the ACPI global lock field
thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
KEYS: reaching the keys quotas correctly
irqchip/versatile-fpga: Apply clear-mask earlier
MIPS: OCTEON: irq: Fix potential NULL pointer dereference
ath9k: Handle txpower changes even when TPC is disabled
signal: Extend exec_id to 64bits
x86/entry/32: Add missing ASM_CLAC to general_protection entry
KVM: x86: Allocate new rmap and large page tracking when moving memslot
crypto: mxs-dcp - fix scatterlist linearization for hash
futex: futex_wake_op, do not fail on invalid op
xen-netfront: Rework the fix for Rx stall during OOM and network stress
ALSA: hda: Initialize power_state field properly
Btrfs: incremental send, fix invalid memory access
IB/ipoib: Fix lockdep issue found on ipoib_ib_dev_heavy_flush
scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point
arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
ext4: fix a data race at inode->i_blocks
ocfs2: no need try to truncate file beyond i_size
s390/diag: fix display of diagnose call statistics
Input: i8042 - add Acer Aspire 5738z to nomux list
kmod: make request_module() return an error when autoloading is disabled
hfsplus: fix crash and filesystem corruption when deleting files
libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
Btrfs: fix crash during unmount due to race with delayed inode workers
drm/dp_mst: Fix clearing payload state on topology disable
ipmi: fix hung processes in __get_guid()
powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
misc: echo: Remove unnecessary parentheses and simplify check for zero
mfd: dln2: Fix sanity checking for endpoints
net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
net: ipv6: do not consider routes via gateways for anycast address check
scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
jbd2: improve comments about freeing data buffers whose page mapping is NULL
ext4: fix incorrect group count in ext4_fill_super error message
ext4: fix incorrect inodes per group in error message
ASoC: Intel: mrfld: fix incorrect check on p->sink
ASoC: Intel: mrfld: return error codes when an error occurs
ALSA: usb-audio: Don't override ignore_ctl_error value from the map
mac80211_hwsim: Use kstrndup() in place of kasprintf()
ext4: do not zeroout extents beyond i_disksize
dm flakey: check for null arg_name in parse_features()
kvm: x86: Host feature SSBD doesn't imply guest feature SPEC_CTRL_SSBD
x86/mitigations: Clear CPU buffers on the SYSCALL fast path
tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
scsi: sg: add sg_remove_request in sg_common_write
ALSA: hda: Don't release card at firmware loading error
video: fbdev: sis: Remove unnecessary parentheses and commented code
drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem
wil6210: increase firmware ready timeout
wil6210: fix temperature debugfs
scsi: ufs: ufs-qcom: remove broken hci version quirk
wil6210: rate limit wil_rx_refill error
rtc: pm8xxx: Fix issue in RTC write path
soc: qcom: smem: Use le32_to_cpu for comparison
of: fix missing kobject init for !SYSFS && OF_DYNAMIC config
of: unittest: kmemleak in of_unittest_platform_populate()
clk: at91: usb: continue if clk_hw_round_rate() return zero
clk: tegra: Fix Tegra PMC clock out parents
NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
ext4: do not commit super on read-only bdev
percpu_counter: fix a data race at vm_committed_as
compiler.h: fix error in BUILD_BUG_ON() reporting
NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
ext2: fix empty body warnings when -Wextra is used
iommu/amd: Fix the configuration of GCR3 table root pointer
fbdev: potential information leak in do_fb_ioctl()
tty: evh_bytechan: Fix out of bounds accesses
locktorture: Print ratio of acquisitions, not failures
mtd: lpddr: Fix a double free in probe()
mtd: phram: fix a double free issue in error path
x86/CPU: Add native CPUID variants returning a single datum
x86/microcode/intel: replace sync_core() with native_cpuid_reg(eax)
x86/vdso: Fix lsl operand order
Linux 4.4.220
Change-Id: Ic931642c95ad95eb2755c3c20f6802e04283e68b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit e78e5a91456fcecaa2efbb3706572fe043766f4d upstream.
In the __getcpu function, lsl is using the wrong target and destination
registers. Luckily, the compiler tends to choose %eax for both variables,
so it has been working so far.
Fixes: a582c540ac1b ("x86/vdso: Use RDPID in preference to LSL when available")
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180901201452.27828-1-sneves@dei.uc.pt
Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On Intel it is required to do CPUID(1) before reading the microcode
revision MSR. Current code in 4.4 an 4.9 relies on sync_core() to call
CPUID, unfortunately on 32 bit machines code inside sync_core() always
jumps past CPUID instruction as it depends on data structure boot_cpu_data
witch are not populated correctly so early in boot sequence.
It depends on:
commit 5dedade6dfa2 ("x86/CPU: Add native CPUID variants returning a single
datum")
This patch is for 4.4 but also should apply to 4.9
Signed-off-by: Evalds Iodzevics <evalds.iodzevics@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5dedade6dfa243c130b85d1e4daba6f027805033 upstream.
... similarly to the cpuid_<reg>() variants.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20170109114147.5082-2-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Evalds Iodzevics <evalds.iodzevics@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The fast SYSCALL exit path returns with SYSRET to userspace after
verifying that there's no pending work. MDS mitigation mandates that CPU
buffers must be cleared on transition from kernel to userspace so do
that here too.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 396d2e878f92ec108e4293f1c77ea3bc90b414ff upstream.
The host reports support for the synthetic feature X86_FEATURE_SSBD
when any of the three following hardware features are set:
CPUID.(EAX=7,ECX=0):EDX.SSBD[bit 31]
CPUID.80000008H:EBX.AMD_SSBD[bit 24]
CPUID.80000008H:EBX.VIRT_SSBD[bit 25]
Either of the first two hardware features implies the existence of the
IA32_SPEC_CTRL MSR, but CPUID.80000008H:EBX.VIRT_SSBD[bit 25] does
not. Therefore, CPUID.(EAX=7,ECX=0):EDX.SSBD[bit 31] should only be
set in the guest if CPUID.(EAX=7,ECX=0):EDX.SSBD[bit 31] or
CPUID.80000008H:EBX.AMD_SSBD[bit 24] is set on the host.
Fixes: 0c54914d0c52a ("KVM: x86: use Intel speculation bugs and features as derived in generic x86 code")
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Jacob Xu <jacobhxu@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[bwh: Backported to 4.x: adjust indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit aa4113340ae6c2811e046f08c2bc21011d20a072 ]
In the current implementation, the call to loadcam_multi() is wrapped
between switch_to_as1() and restore_to_as0() calls so, when it tries
to create its own temporary AS=1 TLB1 entry, it ends up duplicating
the existing one created by switch_to_as1(). Add a check to skip
creating the temporary entry if already running in AS=1.
Fixes: d9e1831a4202 ("powerpc/85xx: Load all early TLB entries at once")
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200123111914.2565-1-laurentiu.tudor@nxp.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit c7def7fbdeaa25feaa19caf4a27c5d10bd8789e4 upstream.
In restore_tm_sigcontexts() we take the trap value directly from the
user sigcontext with no checking:
err |= __get_user(regs->trap, &sc->gp_regs[PT_TRAP]);
This means we can be in the kernel with an arbitrary regs->trap value.
Although that's not immediately problematic, there is a risk we could
trigger one of the uses of CHECK_FULL_REGS():
#define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1)
It can also cause us to unnecessarily save non-volatile GPRs again in
save_nvgprs(), which shouldn't be problematic but is still wrong.
It's also possible it could trick the syscall restart machinery, which
relies on regs->trap not being == 0xc00 (see 9a81c16b5275 ("powerpc:
fix double syscall restarts")), though I haven't been able to make
that happen.
Finally it doesn't match the behaviour of the non-TM case, in
restore_sigcontext() which zeroes regs->trap.
So change restore_tm_sigcontexts() to zero regs->trap.
This was discovered while testing Nick's upcoming rewrite of the
syscall entry path. In that series the call to save_nvgprs() prior to
signal handling (do_notify_resume()) is removed, which leaves the
low-bit of regs->trap uncleared which can then trigger the FULL_REGS()
WARNs in setup_tm_sigcontexts().
Fixes: 2b0a576d15e0 ("powerpc: Add new transactional memory state to the signal context")
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200401023836.3286664-1-mpe@ellerman.id.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6c7c851f1b666a8a455678a0b480b9162de86052 upstream.
Show the full diag statistic table and not just parts of it.
The issue surfaced in a KVM guest with a number of vcpus
defined smaller than NR_DIAG_STAT.
Fixes: 1ec2772e0c3c ("s390/diag: add a statistic for diagnose calls")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Mueller <mimu@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fc2266011accd5aeb8ebc335c381991f20e26e33 upstream.
For thumb instructions, call_undef_hook() in traps.c first reads a u16,
and if the u16 indicates a T32 instruction (u16 >= 0xe800), a second
u16 is read, which then makes up the the lower half-word of a T32
instruction. For T16 instructions, the second u16 is not read,
which makes the resulting u32 opcode always have the upper half set to
0.
However, having the upper half of instr_mask in the undef_hook set to 0
masks out the upper half of all thumb instructions - both T16 and T32.
This results in trapped T32 instructions with the lower half-word equal
to the T16 encoding of setend (b650) being matched, even though the upper
half-word is not 0000 and thus indicates a T32 opcode.
An example of such a T32 instruction is eaa0b650, which should raise a
SIGILL since T32 instructions with an eaa prefix are unallocated as per
Arm ARM, but instead works as a SETEND because the second half-word is set
to b650.
This patch fixes the issue by extending instr_mask to include the
upper u32 half, which will still match T16 instructions where the upper
half is 0, but not T32 instructions.
Fixes: 2d888f48e056 ("arm64: Emulate SETEND for AArch32 tasks")
Cc: <stable@vger.kernel.org> # 4.0.x-
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Fredrik Strupe <fredrik@strupe.net>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit edd4fa37baa6ee8e44dc65523b27bd6fe44c94de upstream.
Reallocate a rmap array and recalcuate large page compatibility when
moving an existing memslot to correctly handle the alignment properties
of the new memslot. The number of rmap entries required at each level
is dependent on the alignment of the memslot's base gfn with respect to
that level, e.g. moving a large-page aligned memslot so that it becomes
unaligned will increase the number of rmap entries needed at the now
unaligned level.
Not updating the rmap array is the most obvious bug, as KVM accesses
garbage data beyond the end of the rmap. KVM interprets the bad data as
pointers, leading to non-canonical #GPs, unexpected #PFs, etc...
general protection fault: 0000 [#1] SMP
CPU: 0 PID: 1909 Comm: move_memory_reg Not tainted 5.4.0-rc7+ #139
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
RIP: 0010:rmap_get_first+0x37/0x50 [kvm]
Code: <48> 8b 3b 48 85 ff 74 ec e8 6c f4 ff ff 85 c0 74 e3 48 89 d8 5b c3
RSP: 0018:ffffc9000021bbc8 EFLAGS: 00010246
RAX: ffff00617461642e RBX: ffff00617461642e RCX: 0000000000000012
RDX: ffff88827400f568 RSI: ffffc9000021bbe0 RDI: ffff88827400f570
RBP: 0010000000000000 R08: ffffc9000021bd00 R09: ffffc9000021bda8
R10: ffffc9000021bc48 R11: 0000000000000000 R12: 0030000000000000
R13: 0000000000000000 R14: ffff88827427d700 R15: ffffc9000021bce8
FS: 00007f7eda014700(0000) GS:ffff888277a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ed9216ff8 CR3: 0000000274391003 CR4: 0000000000162eb0
Call Trace:
kvm_mmu_slot_set_dirty+0xa1/0x150 [kvm]
__kvm_set_memory_region.part.64+0x559/0x960 [kvm]
kvm_set_memory_region+0x45/0x60 [kvm]
kvm_vm_ioctl+0x30f/0x920 [kvm]
do_vfs_ioctl+0xa1/0x620
ksys_ioctl+0x66/0x70
__x64_sys_ioctl+0x16/0x20
do_syscall_64+0x4c/0x170
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f7ed9911f47
Code: <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 21 6f 2c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc00937498 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000001ab0010 RCX: 00007f7ed9911f47
RDX: 0000000001ab1350 RSI: 000000004020ae46 RDI: 0000000000000004
RBP: 000000000000000a R08: 0000000000000000 R09: 00007f7ed9214700
R10: 00007f7ed92149d0 R11: 0000000000000246 R12: 00000000bffff000
R13: 0000000000000003 R14: 00007f7ed9215000 R15: 0000000000000000
Modules linked in: kvm_intel kvm irqbypass
---[ end trace 0c5f570b3358ca89 ]---
The disallow_lpage tracking is more subtle. Failure to update results
in KVM creating large pages when it shouldn't, either due to stale data
or again due to indexing beyond the end of the metadata arrays, which
can lead to memory corruption and/or leaking data to guest/userspace.
Note, the arrays for the old memslot are freed by the unconditional call
to kvm_free_memslot() in __kvm_set_memory_region().
Fixes: 05da45583de9b ("KVM: MMU: large page support")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3d51507f29f2153a658df4a0674ec5b592b62085 upstream.
All exception entry points must have ASM_CLAC right at the
beginning. The general_protection entry is missing one.
Fixes: e59d1b0a2419 ("x86-32, smap: Add STAC/CLAC instructions to 32-bit kernel entry")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200225220216.219537887@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 792a402c2840054533ef56279c212ef6da87d811 upstream.
There is a potential NULL pointer dereference in case kzalloc()
fails and returns NULL.
Fix this by adding a NULL check on *cd*
This bug was detected with the help of Coccinelle.
Fixes: 64b139f97c01 ("MIPS: OCTEON: irq: add CIB and other fixes")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ecb9c790999fd6c5af0f44783bd0217f0b89ec2b upstream.
The value in "new" is constructed from "old" such that all bits defined
as reserved by the ACPI spec[1] are left untouched. But if those bits
do not happen to be all zero, "new < 3" will not evaluate to true.
The firmware of the laptop(s) Medion MD63490 / Akoya P15648 comes with
garbage inside the "FACS" ACPI table. The starting value is
old=0x4944454d, therefore new=0x4944454e, which is >= 3. Mask off
the reserved bits.
[1] https://uefi.org/sites/default/files/resources/ACPI_6_2.pdf
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206553
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 81a34892c2c7c809f9c4e22c5ac936ae673fb9a2 ]
The load address is compared with LOAD_PHYSICAL_ADDR using a signed
comparison currently (using jge instruction).
When loading a 64-bit kernel using the new efi32_pe_entry() point added by:
97aa276579b2 ("efi/x86: Add true mixed mode entry point into .compat section")
using Qemu with -m 3072, the firmware actually loads us above 2Gb,
resulting in a very early crash.
Use the JAE instruction to perform a unsigned comparison instead, as physical
addresses should be considered unsigned.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200301230436.2246909-6-nivedita@alum.mit.edu
Link: https://lore.kernel.org/r/20200308080859.21568-14-ardb@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Fixes:
warning: (SND_SOC_INT_CODEC && SND_SOC_EXT_CODEC && SND_SOC_MSM8996 && SND_SOC_MSM8998)
selects SND_SOC_MSM_HDMI_CODEC_RX which has unmet direct dependencies (SOUND && !M68K &&
!UML && SND && SND_SOC && FB_MSM_MDSS_HDMI_PANEL && (SND_SOC_APQ8084 || SND_SOC_MSM8994 ||
SND_SOC_MSM8996 || SND_SOC_MSM8998 || SND_SOC_SDM660_COMMON))
Change-Id: Ifb313bf2cb484d129b362a6f6ac7d37209dac448
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A while back we added {read,write}_sysreg accessors to handle accesses
to system registers, without the usual boilerplate asm volatile,
temporary variable, etc.
This patch makes use of these in the arm64 arch timer accessors to make
the code shorter and clearer.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05300-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
f9991115f0793 Merge 4.4.219 into android-4.4-p
Conflicts:
drivers/clk/qcom/clk-rcg2.c
drivers/scsi/sd.c
drivers/usb/gadget/function/f_fs.c
drivers/usb/gadget/function/u_serial.c
Change-Id: Ifed3db0ddda828c1697e57e9f73c1b73354bebf7
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HiKey/HiKey960 need UEFI support to boot but don't need much of
the other options that default on when enabling EFI.
Bug: 140204135
[adelva: backport to 4.4-p for cuttlefish vmlinux detection
in extract-vmlinux, where the kernel needs to be a PE
executable for compatibility with 4.19 GKI]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I5c2e63701ae93277fcc3ddb36a39637237c65194
Signed-off-by: Alistair Delva <adelva@google.com>
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Changes in 4.4.218
spi: qup: call spi_qup_pm_resume_runtime before suspending
powerpc: Include .BTF section
ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
spi/zynqmp: remove entry that causes a cs glitch
drm/exynos: dsi: propagate error value and silence meaningless warning
drm/exynos: dsi: fix workaround for the legacy clock name
altera-stapl: altera_get_note: prevent write beyond end of 'key'
USB: Disable LPM on WD19's Realtek Hub
usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters
USB: serial: option: add ME910G1 ECM composition 0x110b
usb: host: xhci-plat: add a shutdown
USB: serial: pl2303: add device-id for HP LD381
ALSA: line6: Fix endless MIDI read loop
ALSA: seq: virmidi: Fix running status after receiving sysex
ALSA: seq: oss: Fix running status after receiving sysex
ALSA: pcm: oss: Avoid plugin buffer overflow
ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks
staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
staging/speakup: fix get_word non-space look-ahead
intel_th: Fix user-visible error codes
rtc: max8907: add missing select REGMAP_IRQ
memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
mm: slub: be more careful about the double cmpxchg of freelist
mm, slub: prevent kmalloc_node crashes and memory leaks
x86/mm: split vmalloc_sync_all()
USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL
USB: cdc-acm: fix rounding error in TIOCSSERIAL
kbuild: Disable -Wpointer-to-enum-cast
futex: Fix inode life-time issue
futex: Unbreak futex hashing
ALSA: hda/realtek: Fix pop noise on ALC225
arm64: smp: fix smp_send_stop() behaviour
Revert "drm/dp_mst: Skip validating ports during destruction, just ref"
hsr: fix general protection fault in hsr_addr_is_self()
net: dsa: Fix duplicate frames flooded by learning
net_sched: cls_route: remove the right filter from hashtable
net_sched: keep alloc_hash updated after hash allocation
NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
slcan: not call free_netdev before rtnl_unlock in slcan_open
vxlan: check return value of gro_cells_init()
hsr: use rcu_read_lock() in hsr_get_node_{list/status}()
hsr: add restart routine into hsr_get_node_list()
hsr: set .netnsok flag
vhost: Check docket sk_family instead of call getname
IB/ipoib: Do not warn if IPoIB debugfs doesn't exist
uapi glibc compat: fix outer guard of net device flags enum
KVM: VMX: Do not allow reexecute_instruction() when skipping MMIO instr
drivers/hwspinlock: use correct radix tree API
net: ipv4: don't let PMTU updates increase route MTU
cpupower: avoid multiple definition with gcc -fno-common
dt-bindings: net: FMan erratum A050385
scsi: ipr: Fix softlockup when rescanning devices in petitboot
mac80211: Do not send mesh HWMP PREQ if HWMP is disabled
sxgbe: Fix off by one in samsung driver strncpy size arg
i2c: hix5hd2: add missed clk_disable_unprepare in remove
perf probe: Do not depend on dwfl_module_addrsym()
scripts/dtc: Remove redundant YYLOC global declaration
scsi: sd: Fix optimal I/O size for devices that change reported values
mac80211: mark station unauthorized before key removal
genirq: Fix reference leaks on irq affinity notifiers
vti[6]: fix packet tx through bpf_redirect() in XinY cases
xfrm: fix uctx len check in verify_sec_ctx_len
xfrm: add the missing verify_sec_ctx_len check in xfrm_add_acquire
xfrm: policy: Fix doulbe free in xfrm_policy_timer
vti6: Fix memory leak of skb if input policy check fails
tools: Let O= makes handle a relative path with -C option
USB: serial: option: add support for ASKEY WWHC050
USB: serial: option: add BroadMobi BM806U
USB: serial: option: add Wistron Neweb D19Q1
USB: cdc-acm: restore capability check order
USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
usb: musb: fix crash with highmen PIO and usbmon
media: flexcop-usb: fix endpoint sanity check
media: usbtv: fix control-message timeouts
staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
staging: wlan-ng: fix use-after-free Read in hfa384x_usbin_callback
libfs: fix infoleak in simple_attr_read()
media: ov519: add missing endpoint sanity checks
media: dib0700: fix rc endpoint lookup
media: stv06xx: add missing descriptor sanity checks
media: xirlink_cit: add missing descriptor sanity checks
vt: selection, introduce vc_is_sel
vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
vt: switch vt_dont_switch to bool
vt: vt_ioctl: remove unnecessary console allocation checks
vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
locking/atomic, kref: Add kref_read()
vt: vt_ioctl: fix use-after-free in vt_in_use()
bpf: Explicitly memset the bpf_attr structure
net: ks8851-ml: Fix IO operations, again
perf map: Fix off by one in strncpy() size argument
Linux 4.4.218
Change-Id: I8de6cf91805269943a4c08f8b08e6a0b8539c08e
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit c4409905cd6eb42cfd06126e9226b0150e05a715 ]
Re-execution after an emulation decode failure is only intended to
handle a case where two or vCPUs race to write a shadowed page, i.e.
we should never re-execute an instruction as part of MMIO emulation.
As handle_ept_misconfig() is only used for MMIO emulation, it should
pass EMULTYPE_NO_REEXECUTE when using the emulator to skip an instr
in the fast-MMIO case where VM_EXIT_INSTRUCTION_LEN is invalid.
And because the cr2 value passed to x86_emulate_instruction() is only
destined for use when retrying or reexecuting, we can simply call
emulate_instruction().
Fixes: d391f1207067 ("x86/kvm/vmx: do not use vm-exit instruction length
for fast MMIO when running nested")
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit d0bab0c39e32d39a8c5cddca72e5b4a3059fe050 upstream.
On a system with only one CPU online, when another one CPU panics while
starting-up, smp_send_stop() will fail to send any STOP message to the
other already online core, resulting in a system still responsive and
alive at the end of the panic procedure.
[ 186.700083] CPU3: shutdown
[ 187.075462] CPU2: shutdown
[ 187.162869] CPU1: shutdown
[ 188.689998] ------------[ cut here ]------------
[ 188.691645] kernel BUG at arch/arm64/kernel/cpufeature.c:886!
[ 188.692079] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 188.692444] Modules linked in:
[ 188.693031] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.6.0-rc4-00001-g338d25c35a98 #104
[ 188.693175] Hardware name: Foundation-v8A (DT)
[ 188.693492] pstate: 200001c5 (nzCv dAIF -PAN -UAO)
[ 188.694183] pc : has_cpuid_feature+0xf0/0x348
[ 188.694311] lr : verify_local_elf_hwcaps+0x84/0xe8
[ 188.694410] sp : ffff800011b1bf60
[ 188.694536] x29: ffff800011b1bf60 x28: 0000000000000000
[ 188.694707] x27: 0000000000000000 x26: 0000000000000000
[ 188.694801] x25: 0000000000000000 x24: ffff80001189a25c
[ 188.694905] x23: 0000000000000000 x22: 0000000000000000
[ 188.694996] x21: ffff8000114aa018 x20: ffff800011156a38
[ 188.695089] x19: ffff800010c944a0 x18: 0000000000000004
[ 188.695187] x17: 0000000000000000 x16: 0000000000000000
[ 188.695280] x15: 0000249dbde5431e x14: 0262cbe497efa1fa
[ 188.695371] x13: 0000000000000002 x12: 0000000000002592
[ 188.695472] x11: 0000000000000080 x10: 00400032b5503510
[ 188.695572] x9 : 0000000000000000 x8 : ffff800010c80204
[ 188.695659] x7 : 00000000410fd0f0 x6 : 0000000000000001
[ 188.695750] x5 : 00000000410fd0f0 x4 : 0000000000000000
[ 188.695836] x3 : 0000000000000000 x2 : ffff8000100939d8
[ 188.695919] x1 : 0000000000180420 x0 : 0000000000180480
[ 188.696253] Call trace:
[ 188.696410] has_cpuid_feature+0xf0/0x348
[ 188.696504] verify_local_elf_hwcaps+0x84/0xe8
[ 188.696591] check_local_cpu_capabilities+0x44/0x128
[ 188.696666] secondary_start_kernel+0xf4/0x188
[ 188.697150] Code: 52805001 72a00301 6b01001f 54000ec0 (d4210000)
[ 188.698639] ---[ end trace 3f12ca47652f7b72 ]---
[ 188.699160] Kernel panic - not syncing: Attempted to kill the idle task!
[ 188.699546] Kernel Offset: disabled
[ 188.699828] CPU features: 0x00004,20c02008
[ 188.700012] Memory Limit: none
[ 188.700538] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---
[root@arch ~]# echo Helo
Helo
[root@arch ~]# cat /proc/cpuinfo | grep proce
processor : 0
Make smp_send_stop() account also for the online status of the calling CPU
while evaluating how many CPUs are effectively online: this way, the right
number of STOPs is sent, so enforcing a proper freeze of the system at the
end of panic even under the above conditions.
Fixes: 08e875c16a16c ("arm64: SMP support")
Reported-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.
Commit 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in
__purge_vmap_area_lazy()") introduced a call to vmalloc_sync_all() in
the vunmap() code-path. While this change was necessary to maintain
correctness on x86-32-pae kernels, it also adds additional cycles for
architectures that don't need it.
Specifically on x86-64 with CONFIG_VMAP_STACK=y some people reported
severe performance regressions in micro-benchmarks because it now also
calls the x86-64 implementation of vmalloc_sync_all() on vunmap(). But
the vmalloc_sync_all() implementation on x86-64 is only needed for newly
created mappings.
To avoid the unnecessary work on x86-64 and to gain the performance
back, split up vmalloc_sync_all() into two functions:
* vmalloc_sync_mappings(), and
* vmalloc_sync_unmappings()
Most call-sites to vmalloc_sync_all() only care about new mappings being
synchronized. The only exception is the new call-site added in the
above mentioned commit.
Shile Zhang directed us to a report of an 80% regression in reaim
throughput.
Fixes: 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [GHES]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20191009124418.8286-1-joro@8bytes.org
Link: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/4D3JPPHBNOSPFK2KEPC6KGKS6J25AIDB/
Link: http://lkml.kernel.org/r/20191113095530.228959-1-shile.zhang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 27f13774654ea6bd0b6fc9b97cce8d19e5735661 ]
'dma-ranges' in a PCI bridge node does correctly set dma masks for PCI
devices not described in the DT. Certain DRA7 platforms (e.g., DRA76)
has RAM above 32-bit boundary (accessible with LPAE config) though the
PCIe bridge will be able to access only 32-bits. Add 'dma-ranges'
property in PCIe RC DT nodes to indicate the host bridge can access
only 32 bits.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit cb0cc635c7a9fa8a3a0f75d4d896721819c63add ]
Selecting CONFIG_DEBUG_INFO_BTF results in the below warning from ld:
ld: warning: orphan section `.BTF' from `.btf.vmlinux.bin.o' being placed in section `.BTF'
Include .BTF section in vmlinux explicitly to fix the same.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200220113132.857132-1-naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.217
NFS: Remove superfluous kmap in nfs_readdir_xdr_to_array
r8152: check disconnect status after long sleep
net: nfc: fix bounds checking bugs on "pipe"
bnxt_en: reinitialize IRQs when MTU is modified
fib: add missing attribute validation for tun_id
nl802154: add missing attribute validation
nl802154: add missing attribute validation for dev_type
team: add missing attribute validation for port ifindex
team: add missing attribute validation for array index
nfc: add missing attribute validation for SE API
nfc: add missing attribute validation for vendor subcommand
ipvlan: add cond_resched_rcu() while processing muticast backlog
ipvlan: do not add hardware address of master to its unicast filter list
ipvlan: egress mcast packets are not exceptional
ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast()
ipvlan: don't deref eth hdr before checking it's set
macvlan: add cond_resched() during multicast processing
net: fec: validate the new settings in fec_enet_set_coalesce()
slip: make slhc_compress() more robust against malicious packets
bonding/alb: make sure arp header is pulled before accessing it
net: fq: add missing attribute validation for orphan mask
iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint
drm/amd/display: remove duplicated assignment to grph_obj_type
gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache
KVM: x86: clear stale x86_emulate_ctxt->intercept value
ARC: define __ALIGN_STR and __ALIGN symbols for ARC
efi: Fix a race and a buffer overflow while reading efivars via sysfs
iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page
nl80211: add missing attribute validation for critical protocol indication
nl80211: add missing attribute validation for channel switch
netfilter: cthelper: add missing attribute validation for cthelper
iommu/vt-d: Fix the wrong printing in RHSA parsing
iommu/vt-d: Ignore devices with out-of-spec domain number
mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame()
ipv6: restrict IPV6_ADDRFORM operation
efi: Add a sanity check to efivar_store_raw()
batman-adv: Fix invalid read while copying bat_iv.bcast_own
batman-adv: Only put gw_node list reference when removed
batman-adv: Only put orig_node_vlan list reference when removed
batman-adv: Avoid endless loop in bat-on-bat netdevice check
batman-adv: Fix unexpected free of bcast_own on add_if error
batman-adv: Fix integer overflow in batadv_iv_ogm_calc_tq
batman-adv: init neigh node last seen field
batman-adv: Deactivate TO_BE_ACTIVATED hardif on shutdown
batman-adv: Drop reference to netdevice on last reference
batman-adv: Fix reference counting of vlan object for tt_local_entry
batman-adv: Avoid duplicate neigh_node additions
batman-adv: fix skb deref after free
batman-adv: Fix use-after-free/double-free of tt_req_node
batman-adv: Fix ICMP RR ethernet access after skb_linearize
batman-adv: Clean up untagged vlan when destroying via rtnl-link
batman-adv: Avoid nullptr dereference in bla after vlan_insert_tag
batman-adv: Avoid nullptr dereference in dat after vlan_insert_tag
batman-adv: Fix orig_node_vlan leak on orig_node_release
batman-adv: lock crc access in bridge loop avoidance
batman-adv: Fix non-atomic bla_claim::backbone_gw access
batman-adv: Fix reference leak in batadv_find_router
batman-adv: Free last_bonding_candidate on release of orig_node
batman-adv: Fix speedy join in gateway client mode
batman-adv: Add missing refcnt for last_candidate
batman-adv: Fix double free during fragment merge error
batman-adv: Fix transmission of final, 16th fragment
batman-adv: Fix rx packet/bytes stats on local ARP reply
batman-adv: fix TT sync flag inconsistencies
batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq
batman-adv: Fix internal interface indices types
batman-adv: update data pointers after skb_cow()
batman-adv: Fix skbuff rcsum on packet reroute
batman-adv: Avoid race in TT TVLV allocator helper
batman-adv: Fix TT sync flags for intermediate TT responses
batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs
batman-adv: Fix debugfs path for renamed hardif
batman-adv: Fix debugfs path for renamed softif
batman-adv: Avoid storing non-TT-sync flags on singular entries too
batman-adv: Prevent duplicated gateway_node entry
batman-adv: Prevent duplicated nc_node entry
batman-adv: Prevent duplicated global TT entry
batman-adv: Prevent duplicated tvlv handler
batman-adv: Reduce claim hash refcnt only for removed entry
batman-adv: Reduce tt_local hash refcnt only for removed entry
batman-adv: Reduce tt_global hash refcnt only for removed entry
batman-adv: Only read OGM tvlv_len after buffer len check
batman-adv: Avoid free/alloc race when handling OGM buffer
batman-adv: Don't schedule OGM for disabled interface
perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag
net: ks8851-ml: Fix IRQ handling and locking
signal: avoid double atomic counter increments for user accounting
jbd2: fix data races at struct journal_head
ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()
ARM: 8958/1: rename missed uaccess .fixup section
mm: slub: add missing TID bump in kmem_cache_alloc_bulk()
ipv4: ensure rcu_read_lock() in cipso_v4_error()
Linux 4.4.217
Change-Id: Ic8c9ec91c66a9a0bb0b6291ad0a5101d18889a67
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit f87b1c49bc675da30d8e1e8f4b60b800312c7b90 upstream.
When the uaccess .fixup section was renamed to .text.fixup, one case was
missed. Under ld.bfd, the orphaned section was moved close to .text
(since they share the "ax" bits), so things would work normally on
uaccess faults. Under ld.lld, the orphaned section was placed outside
the .text section, making it unreachable.
Link: https://github.com/ClangBuiltLinux/linux/issues/282
Link: https://bugs.chromium.org/p/chromium/issues/detail?id=1020633#c44
Link: https://lore.kernel.org/r/nycvar.YSQ.7.76.1912032147340.17114@knanqh.ubzr
Link: https://lore.kernel.org/lkml/202002071754.F5F073F1D@keescook/
Fixes: c4a84ae39b4a5 ("ARM: 8322/1: keep .text and .fixup regions closer together")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 45939ce292b4b11159719faaf60aba7d58d5fe33 upstream.
It is possible for a system with an ARMv8 timer to run a 32-bit kernel.
When this happens we will unconditionally have the vDSO code remove the
__vdso_gettimeofday and __vdso_clock_gettime symbols because
cntvct_functional() returns false since it does not match that
compatibility string.
Fixes: ecf99a439105 ("ARM: 8331/1: VDSO initialization, mapping, and synchronization")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit f967140dfb7442e2db0868b03b961f9c59418a1b ]
Enable the sampling check in kernel/events/core.c::perf_event_open(),
which returns the more appropriate -EOPNOTSUPP.
BEFORE:
$ sudo perf record -a -e instructions,l3_request_g1.caching_l3_cache_accesses true
Error:
The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (l3_request_g1.caching_l3_cache_accesses).
/bin/dmesg | grep -i perf may provide additional information.
With nothing relevant in dmesg.
AFTER:
$ sudo perf record -a -e instructions,l3_request_g1.caching_l3_cache_accesses true
Error:
l3_request_g1.caching_l3_cache_accesses: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'
Fixes: c43ca5091a37 ("perf/x86/amd: Add support for AMD NB and L2I "uncore" counters")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20200311191323.13124-1-kim.phillips@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 8d92e992a785f35d23f845206cf8c6cafbc264e0 upstream.
The default defintions use fill pattern 0x90 for padding which for ARC
generates unintended "ldh_s r12,[r0,0x20]" corresponding to opcode 0x9090
So use ".align 4" which insert a "nop_s" instruction instead.
Cc: stable@vger.kernel.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 342993f96ab24d5864ab1216f46c0b199c2baf8e upstream.
After commit 07721feee46b ("KVM: nVMX: Don't emulate instructions in guest
mode") Hyper-V guests on KVM stopped booting with:
kvm_nested_vmexit: rip fffff802987d6169 reason EPT_VIOLATION info1 181
info2 0 int_info 0 int_info_err 0
kvm_page_fault: address febd0000 error_code 181
kvm_emulate_insn: 0:fffff802987d6169: f3 a5
kvm_emulate_insn: 0:fffff802987d6169: f3 a5 FAIL
kvm_inj_exception: #UD (0x0)
"f3 a5" is a "rep movsw" instruction, which should not be intercepted
at all. Commit c44b4c6ab80e ("KVM: emulate: clean up initializations in
init_decode_cache") reduced the number of fields cleared by
init_decode_cache() claiming that they are being cleared elsewhere,
'intercept', however, is left uncleared if the instruction does not have
any of the "slow path" flags (NotImpl, Stack, Op3264, Sse, Mmx, CheckPerm,
NearBranch, No16 and of course Intercept itself).
Fixes: c44b4c6ab80e ("KVM: emulate: clean up initializations in init_decode_cache")
Fixes: 07721feee46b ("KVM: nVMX: Don't emulate instructions in guest mode")
Cc: stable@vger.kernel.org
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.216
iwlwifi: pcie: fix rb_allocator workqueue allocation
ext4: fix potential race between online resizing and write operations
ext4: fix potential race between s_flex_groups online resizing and access
ext4: fix potential race between s_group_info online resizing and access
ipmi:ssif: Handle a possible NULL pointer reference
mac80211: consider more elements in parsing CRC
cfg80211: check wiphy driver existence for drvinfo report
cifs: Fix mode output in debugging statements
cfg80211: add missing policy for NL80211_ATTR_STATUS_CODE
sysrq: Restore original console_loglevel when sysrq disabled
sysrq: Remove duplicated sysrq message
net: fib_rules: Correctly set table field when table number exceeds 8 bits
net: phy: restore mdio regs in the iproc mdio driver
ipv6: Fix nlmsg_flags when splitting a multipath route
ipv6: Fix route replacement with dev-only route
sctp: move the format error check out of __sctp_sf_do_9_1_abort
nfc: pn544: Fix occasional HW initialization failure
net: sched: correct flower port blocking
ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()
audit: fix error handling in audit_data_to_entry()
HID: core: fix off-by-one memset in hid_report_raw_event()
HID: core: increase HID report buffer size to 8KiB
HID: hiddev: Fix race in in hiddev_disconnect()
MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()'
i2c: jz4780: silence log flood on txabrt
ecryptfs: Fix up bad backport of fe2e082f5da5b4a0a92ae32978f81507ef37ec66
include/linux/bitops.h: introduce BITS_PER_TYPE
net: netlink: cap max groups which will be considered in netlink_bind()
namei: only return -ECHILD from follow_dotdot_rcu()
KVM: Check for a bad hva before dropping into the ghc slow path
slip: stop double free sl->dev in slip_open
mm: make page ref count overflow check tighter and more explicit
mm: add 'try_get_page()' helper function
mm, gup: remove broken VM_BUG_ON_PAGE compound check for hugepages
mm, gup: ensure real head page is ref-counted when using hugepages
mm: prevent get_user_pages() from overflowing page refcount
pipe: add pipe_buf_get() helper
fs: prevent page refcount overflow in pipe_buf_get
audit: always check the netlink payload length in audit_receive_msg()
serial: ar933x_uart: set UART_CS_{RX,TX}_READY_ORIDE
usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags
usb: gadget: serial: fix Tx stall after buffer overflow
drm: msm: Fix return type of dsi_mgr_connector_mode_valid for kCFI
drm/msm/dsi: save pll state before dsi host is powered off
net: ks8851-ml: Remove 8-bit bus accessors
net: ks8851-ml: Fix 16-bit data access
net: ks8851-ml: Fix 16-bit IO operation
watchdog: da9062: do not ping the hw during stop()
s390/cio: cio_ignore_proc_seq_next should increase position index
cifs: don't leak -EAGAIN for stat() during reconnect
usb: storage: Add quirk for Samsung Fit flash
usb: quirks: add NO_LPM quirk for Logitech Screen Share
usb: core: hub: do error out if usb_autopm_get_interface() fails
usb: core: port: do error out if usb_autopm_get_interface() fails
vgacon: Fix a UAF in vgacon_invert_region
fat: fix uninit-memory access for partial initialized inode
vt: selection, close sel_buffer race
vt: selection, push console lock down
vt: selection, push sel_lock up
dmaengine: tegra-apb: Fix use-after-free
dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list
ASoC: pcm: Fix possible buffer overflow in dpcm state sysfs output
ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path
ASoC: dapm: Correct DAPM handling of active widgets during shutdown
RDMA/iwcm: Fix iwcm work deallocation
RMDA/cm: Fix missing ib_cm_destroy_id() in ib_cm_insert_listen()
ARM: imx: build v7_cpu_resume() unconditionally
hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()
dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()
powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems
dm cache: fix a crash due to incorrect work item cancelling
crypto: algif_skcipher - use ZERO_OR_NULL_PTR in skcipher_recvmsg_async
Linux 4.4.216
Change-Id: I9b747fb2a39b1137ee4ec9c5bb2c1aac2419e97b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit fc37a1632d40c80c067eb1bc235139f5867a2667 upstream.
PowerVM systems running compatibility mode on a few Power8 revisions are
still vulnerable to the hardware defect that loses PMU exceptions arriving
prior to a context switch.
The software fix for this issue is enabled through the CPU_FTR_PMAO_BUG
cpu_feature bit, nevertheless this bit also needs to be set for PowerVM
compatibility mode systems.
Fixes: 68f2f0d431d9ea4 ("powerpc: Add a cpu feature CPU_FTR_PMAO_BUG")
Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com>
Reviewed-by: Leonardo Bras <leonardo@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200227134715.9715-1-desnesn@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 512a928affd51c2dc631401e56ad5ee5d5dd68b6 upstream.
This function is not only needed by the platform suspend code, but is also
reused as the CPU resume function when the ARM cores can be powered down
completely in deep idle, which is the case on i.MX6SX and i.MX6UL(L).
Providing the static inline stub whenever CONFIG_SUSPEND is disabled means
that those platforms will hang on resume from cpuidle if suspend is disabled.
So there are two problems:
- The static inline stub masks the linker error
- The function is not available where needed
Fix both by just building the function unconditionally, when
CONFIG_SOC_IMX6 is enabled. The actual code is three instructions long,
so it's arguably ok to just leave it in for all i.MX6 kernel configurations.
Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8fde12ca79aff9b5ba951fce1a2641901b8d8e64 upstream.
If the page refcount wraps around past zero, it will be freed while
there are still four billion references to it. One of the possible
avenues for an attacker to try to make this happen is by doing direct IO
on a page multiple times. This patch makes get_user_pages() refuse to
take a new page reference if there are already more than two billion
references to the page.
Reported-by: Jann Horn <jannh@google.com>
Acked-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[ 4.4.y backport notes:
Ajay: - Added local variable 'err' with-in follow_hugetlb_page()
from 2be7cfed995e, to resolve compilation error
- Added page_ref_count()
- Added missing refcount overflow checks on x86 and s390
(Vlastimil, thanks for this change)
Srivatsa: - Replaced call to get_page_foll() with try_get_page_foll() ]
Signed-off-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bef8e2dfceed6daeb6ca3e8d33f9c9d43b926580 upstream.
Pointer on the memory allocated by 'alloc_progmem()' is stored in
'v->load_addr'. So this is this memory that should be freed by
'release_progmem()'.
'release_progmem()' is only a call to 'kfree()'.
With the current code, there is both a double free and a memory leak.
Fix it by passing the correct pointer to 'release_progmem()'.
Fixes: e01402b115ccc ("More AP / SP bits for the 34K, the Malta bits and things. Still wants")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: ralf@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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